At a substance’s boiling, freezing, etc, points, all of the substance must change to the next state. The condition of the bonds cannot remain the same at that temperature. For example, at 100° C water must change from a liquid to a gas. That is the speed limit of liquid water molecules. At 100° C the liquid bonds can no longer hold on and all the molecules convert to gas.
Please login or register to read the rest of this content.
Just reached this lesson, as we’re working through the Thermodynamics curriculum. Still seeing the duplicate video, so skipping for now … Can you please shoot us a note if content is added/changed, so we can come back and cover the material? Thanks as always!
This same video was already presented several lessons earlier (ref. https://www.sciencelearningspace2.com/2014/10/thermometers/). Is the repetition deliberate? Thanks!